Fitment Information: Requires 5 x 5.5" wheels. Requires at least 105 mm or 4.130" Wheel Pilot Diameter. 2007-2011 Dana 30 stock front axles have smaller u/Joints, inner axles with 1350 series (7166x U/joint size) are also required. Replaces vulnerable and expensive factory unit bearings

Yukon Gear & Axle Spin Free Kits increase fuel efficiency and reduce maintenance costs. These kits replace the failure prone and expensive factory unit bearings with tapered bearings and races. The result is not only a design which is easier and more economical to service, but one that offers significant increases in fuel efficiency because there are fewer rotating parts in the drivetrain. Less parasitic drag equals better MPG. Spin Free Kits also include low-profile Yukon Hardcore Premium Locking Hubs, for quick changes between two-wheel and four-wheel drive.

• Includes Front Double-Drilled Rotors, Rear Rotors Sold Separately
• Kit Includes Heavy-Duty 4340 Chromoly Outer Axles 30-Spline
• Complete Kit contains all necessary components 
• Includes Dana 44 Yukon Hardcore Locking Hubs
• 7166 u-joint size